We guess he's no stranger to this kind of behavior!!
There's reportedly a video floating around of Jaafar Jackson playing with an Airsoft gun and threatening to bust his brother Jermajesty's head open!
The video, which is taken months before he threatened Michael's kids, Blanket and Prince with a stun gun, shows Jaafar 'playing' with his brother by coming into his room, ordering him to the ground, and pretending to pistol-whip him!
We understand that kids like to play pretend, but we think this is a little intense!!
He might need to go talk to somebody about his anger!!
[Image via AP Images.]